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Radial velocity · 2017

HD 113996 b

This world receives 114× the starlight Earth does; a year lasts 610 days; the light you see left it 379 years ago.

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Size
1.1 × Jupiterestimated
A year
610 days1.6 AU
Temperature
526 °C799 K

About this world

HD 113996 b is a gas giant orbiting HD 113996, a giant star (type K5III) 379 light-years from Earth. It is about 1.1 times the size of Jupiter (its size estimated from its mass), with at least 6.3 Jupiter masses (a minimum, measured by radial velocity). It completes an orbit every 610 days at 1.6 AU from its star, on a strongly elongated orbit (e = 0.28).

Its equilibrium temperature is about 799 K (526 °C): far too hot for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.

It was discovered in 2017 by radial velocity with Bohyunsan Optical Astronomical Observatory. The star wobbles toward and away from us, Doppler-shifting its spectrum.

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